Tub-beater.



C. W. UNKLE 611. D. GRILEY.

T UB HEATER.

APPLlcn'mu map man l5, 1917.`

1,244,144. n 4Patented 04.241917. 4

UNITED STATES PATENT orFIoE.

` ennui w.-

Tnnonoian ,montagnes UnitedStates, residing at Baltimore, i the county7V of Fairfield and State of Ohio,

have invented a certain newv and useful Imrovenient in Tub-Beaters, of which the folowing is a specification.

This invention relates more particularly to machines for, the reduction of paper to pulp and-are commonly known in practice as tub beaters. In the use of the machine of this kind now commonly employed there is a large waste of time and energy due to the action of the machine upon material that is suiciently reduced before the entire mass is reduced. ,It is the object of the present invention to avoid at least some 4measure of this Waste by a construction adapted to remove from the tub al1 orv a portion of the sufficiently reduced material prior to the lsas reduction ofthe Whole mass.

The invention resides in the means em-` bodied in the example shown in the accompanying drawing and set forth in the iollowlng descriptiom'fthe features of novelty being finally claimed.

In said drawing- Figure 1 is a. top plan view with portions in section.

Fi 2 is a partial section on the line II- I Fig. 1, looking to the left.

In the views 5 designates the elongated tub in vhich the paper to be pulped with the necessary `water or other liquids used in the rocess are placed. Secured in this tub longitudinally is the usual midfeather tot such length and so placed as to permit a.' circulation of the material around the tub when it is impelled at one -side of the midafeather.

In one of the spaces between the glnidV featherand' a side of the tub is the ilsual roll 7 of Wood land containing knives oi' iiy- 'bars coperating with the/usual bed plate (not shown) in the bottom below. The roll is 'fastened to a shaft 8 provided with a beltI pulley as at 9 for driving the roll. The tub 'also contains the .usual back fallat 10.

`The roll is inclosed at its upper side in a fhood 11 and in a flattened portion at 120i that side of the hoodopposite the back fall we provide a series of perforations 13. Securedona rod 14 lying on the fiat portion 12 is a series of plates 15 having sharp edges so that when therod is reciprocated the plates cut portions of thevpaper stock pro- Spcqioatipn of Lettersfotent. appimuon ma :fue iii/1am. seran no. 17am.

. with it a beveled gutter.

tradingl .through all A.the .parten-ations. and clear. t em for the passage-ofv-'materlalas hereinafter further explained. E

To reciprocate the` we provide the followingV means:

That vend of the Vshaft 4containing. Athe roll l Patented .0061?2431911 with a tspur gear. lI-journaled in a suitable bracket 18. The spur gear 17 has connected ear 119; which in turn meshes with a beve ed gear 20 `on one: end

.ofa'short sha-ft 21Arjournaled in a suitable bracket 22 on-the side of the-,tub. `The otherend of the shaft 21is'y provided ywith a" disk 23 `having-a crank pin 24 thatwonks in a slotted yoke 25 secured to the end of the aforesaid rod 14'. When the sha-ft-8 s rotated, therefore, the revolution of the crank pin 24 imparts a rectilinear reciproeating -motion to the rod 14.

Located below the perforation 143 is an` inclined trough or gutter 26 which is extended beyond' the opposite side of the tub so as 5to discharge 4the pulp into.a suitable receptacle placed there orthe purpose.

The gutter 26 has a lateral discharge 27 into the tub beyond the mid-feather. e

28 designates a removable gate fitting in' grooves 29 ofthe lateral discharge 27 so. that the contents of the gutter Will be directed to the receptacle beyond the tub. When said receptacle is to be removed or changed the gate 2S is placed vin the grooves 30 thereby causing the contents of the `gutter fte-disp chargel into the tub. The'iiow vof the contents of the gutter can thus be changed' without stopping the pulping operation.

In practice the roll is turned in the .direction of the arrow Fig.r2 and centrifu al action throws the stock against the inner side of the fiat portion, 12. The perfor-ations permit the suiciently reduced portions to pass through. said perforations and into the The larger portions clog and pron trude through said perforations but are. cut oil", removed or pushed back into the tub by the rcciprocated'plates 15.

VThe forms of the parts can be changed without departing from the gist .of the invention as claimed.

What We claim is;

1. In apaper pulping machine, the combination, with a tub and beater therein, of a hood for the beater, a perforated member against which the pulp is thrown by centrifugal action to separate the suiiiciently reioo4 nro

Vl5. 1'9 ucedportions, and means for conducting wayj'the 'material discharged through said perforaticnsl 2.5.'. n a pa er pulpin machine, the combination, withj a tub anni? beater therein, of a 10.1.11)01 f hthe. beaterprovide'd with a perforated ortion against which the pulp is thrown y centrifugal action, means for preventing the clo ging of said perforations consistin of a evice freeiproc'ated across 1.6 said perforations, and means for carrying awayfthe-material discharged through said perforations.

` 3. Ina pape;` pulpingmachine, the combination, with a tub and beater therein, of a 20 hoodfor the beater provided With a perforated portion against which the pulp is thrown by centrifugal action,l means for preventing the clogging of said perforatlone and means for conducting away the material discharged through said pcrforations consisting o a conductor havinga lateral discharge into the tub and a discharge to the exterior of themachine and .means whereby either of said discharges may be closed independently of the other.

4. Vln a paper'pulpng machine, the combi'- nation, with a tub and beater therein, of a lined iforthcubeater, :mamans fcriseiannltfo pu ingr the sufficiently reduced portions p from insufficiently reduced portions thereof consisting of a perforated member against the inner side of which the pulp' is thrown by centrifugal action, means for preventing the clogging of said perforated member consisting of a clearingr device and means for moving 'the same across-the outer side of said perforated member, and means for carrying away the material discharged through said perforated member.

CHARLES W'. UN KLE. THEODORE D. GRILEY, 

